4.0 inactive inactive inactive inactive inactive inactive inside DEGRADED mRNA source inside RNA rn1 inside PROTEIN pr1 inside DEGRADED protein source inside DEGRADED sa2_degraded inside DEGRADED sa3_degraded mRNA transcription STATE_TRANSITION sa1 sa2 sa3 $\frac{\mathrm{k1}\mathrm{p0}^n}{\mathrm{p0}^n+\mathrm{s3}^n}$ protein translation STATE_TRANSITION sa7 sa3 sa2 $\mathrm{k2}\mathrm{s2}$ mRNA degradation STATE_TRANSITION sa2 sa8 $\mathrm{d1}\mathrm{s2}$ protein degradation STATE_TRANSITION sa3 sa9 $\mathrm{d2}\mathrm{s3}$